A creative mind never stops working. It's always searching for new ideas, new methods, and most importantly new inspiration.

Here are nine entrepreneurs who have found wealth and success with their own creative ideas and have used the money earned from their ventures to reinvest in new startups that they find inspiring. After all, what good is making a little bit of cash if you can’t use it to make even more?

Kevin Rose, investments: Foursquare and Fab

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My HDTV Choice

Rose is the founder of Digg, a user-submitted news site where readers "Digg" the stories they like most, promoting them to the site’s coveted front page.

Investments:

Foursquare: Part of a $1.35 million, nine-participant angel investment in 2009 for the location sharing app.

Fab.com: Part of a $7.7 million, 18-participant series A funding round in 2011 for the design-centric online marketplace.

Kevin Hartz, investments: Pinterest and Milo

Hartz is the co-founder of Eventbrite, an event promotion and ticket-sales website.

Investments

Pinterest: Part of a $500,000, 10-participant angel investment in 2010 and a $10 million, seven-participant series A funding round in 2011 for the virtual pin board site.

Milo: Part of a $950,000, seven-participant seed investment in 2008 and a $4 million, 17-participant series A round of funding in 2009, for the product comparison site.

Eduardo Saverin, investment: ShopSavvy

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Mashable

Saverin is the former CFOand co-founder of Facebook , he has also invested in other early-stage tech startups Qwiki (an interactive video site) and Jumio (a mobile payments and identity verification company).

Investments

ShopSavvy: $7 million in venture round funding in 2011, for the comparison and mobile shopping app.